Byssothecium Fuckel, Bot. Ztg. 19 (no. 35): 251 (1861).

MycoBank number: MB 714; Index Fungorum number: IF 714; Facesoffungi number: FoF 06498; 4 morphological species (Species Fungorum 2020), 1 species with molecular data.

Type speciesByssothecium circinans Fuckel, Bot. Ztg. 19 (no. 35): 251 (1861).

NotesByssothecium circinans was reported as a saprobe on woody substrates (Holm 1957, Boise 1983). The genus had been illustrated in Boise (1983) with subglobose ascomata, broadly papillate necks and brown ascospores with Chaetophoma as asexual morph characters. The phylogenetic placement of Byssothecium circinans has been verified in Schoch et al. (2009a) with the confirmation in its taxonomic placement in various studies (Zhang et al. 2012b, Hyde et al. 2013, Chethana et al. 2015, Tanaka et al. 2015, Voglmayr & Jaklitsch 2017).